US3595311A - Connecting unit for the completion equipment of a producing underwater well - Google Patents

Connecting unit for the completion equipment of a producing underwater well Download PDF

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Publication number
US3595311A
US3595311A US815685A US3595311DA US3595311A US 3595311 A US3595311 A US 3595311A US 815685 A US815685 A US 815685A US 3595311D A US3595311D A US 3595311DA US 3595311 A US3595311 A US 3595311A
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United States
Prior art keywords
tubing
rotatable element
pipe
head valve
production
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Expired - Lifetime
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US815685A
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English (en)
Inventor
Jacques Harbonn
Andre Castela
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
    • E21B23/12—Tool diverters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations

Definitions

  • This element is provided with a first duct adapted to connect the tubing with the flow line in a first position of the rotatable element and a second duct adapted to connect the tubing with the head valve in a second position of the rotatable element.
  • the present invention relates to a connecting unit for the completion equipment or Christmas tree of a producing underwater oil well, adapted to connect wing flow lines with the production tubings of this well and permitting to introduce into these tubings servicing tools or instruments of various types, for example scraping tools or measuring instruments (such as pressure sensing instruments) either through the top of the well or through the wing flow lines, whereby the introduction of such tools or instruments through the top of the well can be achieved without interrupting the production of the well.
  • scraping tools or measuring instruments such as pressure sensing instruments
  • the return to the collecting station of a tool or instrument thus introduced into a production tubing is obtained by cutting off the counterpressure at this collecting station, the tool being then carried by the liquid effluent from the well to the station, following the flow line which is connected with the production tubing whereinto the tool was previously introduced.
  • This plug is bevelled at its lower part so as to provide for tangential connection both with the production tubing and with its associated flow line.
  • the invention obviates these drawbacks by providing a connecting unit between a production tubing and the associated flow line, which prevents the use of a removable plug for the tubing.
  • FIG. 1 diagrammatically illustrates a production head for a submerged oil well with two production tubings, provided with a connecting unit according to the invention.
  • FIG. 2 shows more in detail in the case of a well with only one production tubing, an embodiment of the unit according to the invention, wherein a control of the head valve in synchronism with the rotation of the barrel or drum according to the invention is achieved through mechanical means.
  • the part of this figure located on the left side of the axis xy of the barrel corresponds to an axial section by a plane containing the axis of the longitudinal duct 21 (section along lines ab, a'b of FIG. 3) and the part of the figure located on the right side of the axis xy corresponds to a section by a plane containing the central line of the incurved duct 24 (section along lines cd, c'd' ofFIG. 3).
  • FIG. 3 is a separate view of the barrel used in the unit of FIG. 2.
  • FIG. 4 shows another type of barrel which may be used.
  • FIG. 5 is a bottom view of a barrel having the shape of a cylindrical sector, which is also suitable.
  • FIG. 6 diagrammatically illustrates another embodiment of the connecting unit according to the invention.
  • FIG. 7 shows a sectional view of this unit taken along the plane defined by the axis of the production tubing and by the axis of the wing flow line, in the first position of the rotatable element or barrel.
  • FIG. 8 illustrates the corresponding view in the second position of this rotary element.
  • FIG. 9 and FIG. 10 illustrate two modifications of the preceding embodiment.
  • FIG. 11 shows another embodiment of the bypass means which provides for the continuation of the production in the second position of the barrel.
  • FIG. 1 is illustrated a production head or Christmas tree for an underwater oil well, provided with a connecting unit according to the invention.
  • the reference numeral 1 indicates the water bottom
  • 2 and 3 designate two production tubings of the well which are conventionally provided with the two master valves 4 and 5 (generally, each tubing is rather provided with two superposed master valves, on grounds of safety).
  • Each tubing and the associated flow line are connected between the master valve 4, 5 which is located at the highest level on the tubing and a head valve 8, 9 located in the extension of the tubing, on a duct 10, 1] which opens out at the top 12 of the production head.
  • each head valve 8 9 is generally associated a second valve on grounds of safety. In order not to complicate the figures, only one head valve has been shown on each tubing.
  • the flow lines 6 and 7 follow, between the water bottom 1 and their point of connection with the tubing, a loop of large radius of curvature (usually greater than 1.50 meter) so as to be tangentially connected with the associated tubing, thereby permitting to introduce into each tubing suitable conventional tools or instruments by pumping them from the gathering station, in the manner described in the introductive part of this specification.
  • the flow lines 6 and 7 are provided with the usual wing valves 13 and 14.
  • a connecting unit 15 according to the invention is located in the Christmas tree between the higher master valve of each tubing and the lower head valve of this tubing.
  • the unit includes (FIGS. 1 and 2) for each production tubing, such as the tubing 3, a drum or barrel l6 rotatably mounted in a cylindrical housing 17 of the unit 15 around an axis xy parallel to the axis st of the tubing 3 and offset with respect to this axis.
  • the production tubing 3 has an opening 18 on the base of the housing 17 and the flow line 7 connected with the mouthpiece 19 of the unit according to the invention has an opening on the lateral wall of the cylindrical housing 17 (opening 20).
  • the head valve 9 communicates with the upper part of the housing 17 through the opening 18a.
  • the drum includes (FIGS. 2 and 3) a duct 21 provided with an opening 22, 23 on each base, parallel to the rotation axis xy of the drum and located at a distance from the axis xy equal to the distance between the axes st and xy.
  • the drum also includes an incurved duct 24 having an opening 25 on the lower base of the drum at the same distance from the axis xy than the opening 22 and an opening 26 on the lateral wall ofthe drum, at the same level as the opening 20.
  • the drum 16 can be displaced by a simple rotation around its axis xy, from a first position (shown by FIG. 2) in which the flow line 7 communicates with the tubing 3 through the duct 24, into a second position in which the tubing 3 is connected through the rectilinear duct 21 with the top valve 9 and with the duct 11 which extends the tubing 3.
  • the incurved duct 24 is so designed as to tangentially connect this duct with the tubing 3 and the flow line 7 in the first position of the drum, with a radius of curvature sufficient to permit the passage through this duct of conventional servicing tools or instruments introduced by pumping.
  • the radius of the duct 24 will preferably be greater than 1.50 meter, for permitting the passage of most tools or instruments of the types now conventionally used, this value constituting however no absolute limitation of the invention.
  • This connecting unit includes, for each couple head valvedrum, means for simultaneous remote control of the actuation of the head valve 9 and of the rotation of the drum, said means being adapted to make the closed position of the head valve (FIG. 2) correspond to the first position of the drum and to make the open position of the head valve 9 correspond to the second position of the drum.
  • This control means will include the usual electric or hydraulic (as in the embodiment of FIG. 2) actuating unit of the head valve 9, supplied with energy and controlled through a cable or a flexible hose, with electric, hydraulic or mechanical means, this actuating unit being adapted to the rotation of the drum 16 by the actuation of the head valve.
  • the actuating units 27 and 28 of the head valves 8 and 9 have being shown located outside the Christmas tree to make the drawing clearer, whereas they are generally included in this Christmas tree.
  • Power lines (cables or hoses) 29, 30 supply these actuating units with the necessary electric or hydraulic energy for their actuation in either direction (closing or opening).
  • the head valve 9, shown in its closed psition to which corresponds the first position of the drum I6 is ofa rotatable hydraulically controlled type, the rotation of the plug of this valve in either direction being obtained by admitting hydraulic fluid onto either side of piston 31 coupled to the plug of the valve by a crank-lever system.
  • the head valve 9 is housed in the connecting unit of the invention, but this valve might as well not be a part of said unit either for the sake of convenience in the manufacturing of this valve and of this unit or in order to provide an unit according to the invention which can readily be adapted to various types of available head valves.
  • the means controlling the rotation of the drum 16 by that of the plug of the valve 9 are purely mechanical and constituted by the cooperation of a toothed pinion 32 and a tangent screw or worm 9a integral with the plug of the valve 9.
  • the pinion 32 drives in rotation a shaft 320 on which are keyed the toothed pinions 34 and 35 which are respectively in mesh with the toothed rings 36 and 37 integral with the drum 16.
  • the unit according the invention will be designed so that the rotation of the drum from its first position (shown by FIG. 2) to the second position, in which the rectilinear duct 21 comes into alignment with the production tubing 3, does not cause any interruption of the production of the oil well, as well as prevents the tools introduced into the tubing to flow out through the wing flow line.
  • the drum 16 is a full cylinder as in the embodiment illustrated by FIG. 2 and 3, a sufficient clearance may be provided between this drum and the wall of its cylindrical housing 17, so that the fluid produced by the well can continue to flow from the tubing 3 to the flow line 7, even when this flow line and this tubing are no longer interconnected through the incurved duct 24.
  • a hollow cylinder 38 may optionally be used as a drum, as shown by FIG. 4, this drum being provided on its lateral wall and optionally on its lower base, with openings 39 the size and number of which are sufficient to allow the fluid to flow from the tubing to the pipe 7, even in the second position of the drum, where the communication through the incurved duct 24 is suppressed.
  • the drum not necessarily be a full size cylinder but may also be constituted by a cylindrical sector as the drum 40 shown by FIG. 5, which is provided with a toothed sector 41 corresponding to the toothed rings 36 and 37 of the drum 16, for driving in rotation this drum.
  • the fluids and the tools or instruments can then pass unimpeded from the tubing 3 to the flow line 7 and vice versa.
  • FIGS. 6, 7 and 8 which diagrammatically illustrate another embodiment of the connecting unit according to the invention, only one production tubing of the underwater well has been shown and the means for rotating the barrel or drum as well as the means for controlling the head valve have not been illustrated so as to make the drawing clearer.
  • the rotatable element 16 has a horizontal axis (at right angles to the tubing axis), whereas the rotation axis of this drum is parallel to the axis of the tubing in the embodiment illustrated by FIGS. 1 and 2.
  • the orientation and arrangement of the rotation axis of the element 16 relative to the tubing axis will be a matter of choice for those skilled in the art and should by no way be considered as limiting the present invention.
  • the reference numeral 3 designates the production tubing of an oil well.
  • the reference numeral 7 designates a wing pipe connected with the flow line which collects the production of tubing 3 and connected with the latter through a connecting unit 15 according to the invention.
  • the barrel 16 is provided with two connecting ducts 24 and 21, the first of which connects the tubing 3 with thewing pipe 7 in a first position of the barrel illustrated by FIGS. 6 and 7, corresponding to the position of closure of the head valve 9.
  • This first connecting duct 24 provides for a tangential connection of the wing pipe 7 with the tubing 3, with a radius of curvature which is sufficient to making possible the introduction of servicing tools or measuring instruments from the wing pipe 7 into the tubing 3 or vice versa, in a known manner.
  • the second conducting duct 21 provided through the barrel is adapted to simultaneously come in the extension of tubing 3 and of pipe 11 in a second position of the barrel 16 which is derived from the first position by a rotation of the barrel about its axis xy.
  • At least one of the openings of the second connecting duct 21, of the wing pipe 7 and of the pipe 11 in the cylindrical housing of the barrel is widened so as to simultaneously bring tubing 3 into communication with pipe 11 and wing pipe 7 in the second position of barrel 16, this widening being combined with a preferential orientation of duct 21 towards head valve 9.
  • duct 21 which is provided with a widened opening 21a adapted to simultaneously communicate with the opening 7aof theflow line and with the opening 110 of pipe 11 in the cylindrical housing of the barrel, in the second position of the barrel.
  • the fluid supplied by the tubing can, in this second position of the barrel, continue to flow into the collecting flow line, while guiding means, which in this embodiment is constituted by the cylindrical part 210 of duct 21, provides in the second position of the barrel for a selective orientation towards the pipe 11 of the tools or instruments which may rise back from the tubing 3.
  • FIG. 10 illustrates another embodiment of the invention wherein duct 21 of barrel 16 opens out into the cylindrical housing thereof through two widened openings 21a and 21b, whereinto also opens a bypass duct 43 which provides in the second position of the barrel an additional passage for the fluid supplied by tubing 3 and the flow of which has been indicated by dotted lines in FIG. 10.
  • the head valve may for example be controlled in synchronism with the rotation of the barrel in the previously described manner, as illustrated by FIG. 2.
  • F IG. 11 illustrates another embodiment in the second position of the barrel, in which tools may rise from the tubing to the top ofthe wellhead.
  • a channel 44 connecting the pipe 11 and the wing pipe 7 has been provided through the body of the connecting unit itself, this connecting channel allowing the production to continue to flow towards the pipe 7 in the second position of the barrel 16, as indicated by the arrow.
  • Connecting unit for the production head of an underwater well which is provided with at least a production tubing opening out at the top of the production head through at least one pipe provided with at least one head valve, at least one wing pipe connected to a collecting flow line associated with said tubing, wherein between said tubing and said head valve is provided a housing whereinto open said tubing, said wing pipe and said pipe provided with said head valve, said housing containing a rotatable element provided with a first connecting duct adapted to connect said tubing with said wing pipe in a first position of said rotatable element and a second connecting duct adapted to connect said tubing with said pipe provided with said head valve in a second position of said rotatable element.
  • Connecting unit for the production head of an underwater well which is provided with at least a production tubing opening out at the top of the production head through at least one pipe provided with at least one head valve, at least one wing pipe connected to a collecting flow line associated with said tubing, wherein between said tubing and said head valve is provided a housing whereinto open said tubing, said wing pipe and said pipe provided with said head valve, said housing containing a rotatable element provided with a first connecting duct adapted to connect said tubing with said wing pipe in a first position of said rotatable element and a second connecting duct adapted to connect said tubing with said pipe provided with said head valve in a second position of said rotatable element, said connecting unit being provided with means for controlling said head valve in synchronism with the rotation of said rotatable element, so as to make said first position of said rotatable element correspond to the closed position of said head valve and said second position of said rotatable element correspond to the open position of said head valve.
  • Connecting unit for the production head of an underwater oil well which is provided with at least one production tubing opening out at the top of the production head through at least one head valve, a collecting flow line associated with said tubing and an incurved wing pipe tangentially connecting said tubing with said flow line, wherein between said tubing and said head valve is provided a housing wherein is located a rotatable element having an axis parallel to the axis of said tubing and offset with respect thereto, said tubing and said flow line opening out into said housing through apertures respectively located in the lower wall of said housing and in the lateral wall thereof, said housing hav- .ing an upper opening into said head valve, at least one part of said wing pipe being housed inside said rotatable element and being adapted to connect said tubing and said flow line in a fist position of said rotatable element, said rotatable element also carrying a longitudinal pipe adapted to connect said tubing with said upper opening of said housing in a second position of said rotatable element.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
US815685A 1967-01-19 1969-04-14 Connecting unit for the completion equipment of a producing underwater well Expired - Lifetime US3595311A (en)

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FR91850 1967-01-19

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US (1) US3595311A (xx)
FR (1) FR1567019A (xx)
GB (1) GB1211138A (xx)
NL (1) NL6800773A (xx)
NO (1) NO122474B (xx)
OA (1) OA02716A (xx)
SU (1) SU372835A3 (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035002A (xx) * 1971-12-27 1975-04-03
WO1987001158A1 (en) * 1985-08-12 1987-02-26 Cbv Indústria Mecânica S.A. Valve module, specially for undersea petroleum wells
WO1987001157A1 (en) * 1985-08-12 1987-02-26 Cbv Indústria Mecânica S.A. Valve module, specially for undersea petroleum wells
WO1987001159A1 (en) * 1985-08-12 1987-02-26 Cbv Indústria Mecânica S.A. Valve module, specially for undersea petroleum wells
US4848473A (en) * 1987-12-21 1989-07-18 Chevron Research Company Subsea well choke system
EP0499547A1 (fr) * 1991-02-14 1992-08-19 Elf Aquitaine Production Tête de puits sous-marine
US5732773A (en) * 1996-04-03 1998-03-31 Sonsub, Inc. Non-welded bore selector assembly
US20090126938A1 (en) * 2007-11-19 2009-05-21 Vetco Gray Inc. Utility skid tree support system for subsea wellhead
US20090294132A1 (en) * 2003-05-31 2009-12-03 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20100025034A1 (en) * 2006-12-18 2010-02-04 Cameron International Corporation Apparatus and method for processing fluids from a well
US8776891B2 (en) 2004-02-26 2014-07-15 Cameron Systems (Ireland) Limited Connection system for subsea flow interface equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3664376A (en) * 1970-01-26 1972-05-23 Regan Forge & Eng Co Flow line diverter apparatus

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2070326A (en) * 1935-03-01 1937-02-09 Karl W Weidinger Well flow head
US2096565A (en) * 1936-04-30 1937-10-19 William D Shaffer Tubing head
US2148360A (en) * 1937-12-30 1939-02-21 Gray Tool Co Oil well casing head and tubing hanger
US2179814A (en) * 1938-05-25 1939-11-14 Billy F Conaghan Adjustable tubing hanger and stuffing box support
US2766830A (en) * 1953-06-29 1956-10-16 Walter L Church Control heads
US2889886A (en) * 1956-01-23 1959-06-09 Jay P Gould Well head
US3050120A (en) * 1955-11-25 1962-08-21 Pan American Petroleum Corp Method and apparatus for completing wells
US3052301A (en) * 1957-05-15 1962-09-04 Gray Tool Co Multiple tubing string well completion equipment
US3354961A (en) * 1965-05-26 1967-11-28 Cameron Iron Works Inc Apparatus for guiding a well tool being pumped out of a well into a laterally branching flow line

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2070326A (en) * 1935-03-01 1937-02-09 Karl W Weidinger Well flow head
US2096565A (en) * 1936-04-30 1937-10-19 William D Shaffer Tubing head
US2148360A (en) * 1937-12-30 1939-02-21 Gray Tool Co Oil well casing head and tubing hanger
US2179814A (en) * 1938-05-25 1939-11-14 Billy F Conaghan Adjustable tubing hanger and stuffing box support
US2766830A (en) * 1953-06-29 1956-10-16 Walter L Church Control heads
US3050120A (en) * 1955-11-25 1962-08-21 Pan American Petroleum Corp Method and apparatus for completing wells
US2889886A (en) * 1956-01-23 1959-06-09 Jay P Gould Well head
US3052301A (en) * 1957-05-15 1962-09-04 Gray Tool Co Multiple tubing string well completion equipment
US3354961A (en) * 1965-05-26 1967-11-28 Cameron Iron Works Inc Apparatus for guiding a well tool being pumped out of a well into a laterally branching flow line

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035002A (xx) * 1971-12-27 1975-04-03
JPS5752475B2 (xx) * 1971-12-27 1982-11-08
WO1987001158A1 (en) * 1985-08-12 1987-02-26 Cbv Indústria Mecânica S.A. Valve module, specially for undersea petroleum wells
WO1987001157A1 (en) * 1985-08-12 1987-02-26 Cbv Indústria Mecânica S.A. Valve module, specially for undersea petroleum wells
WO1987001159A1 (en) * 1985-08-12 1987-02-26 Cbv Indústria Mecânica S.A. Valve module, specially for undersea petroleum wells
US4848473A (en) * 1987-12-21 1989-07-18 Chevron Research Company Subsea well choke system
EP0499547A1 (fr) * 1991-02-14 1992-08-19 Elf Aquitaine Production Tête de puits sous-marine
FR2672935A1 (fr) * 1991-02-14 1992-08-21 Elf Aquitaine Tete de puits sous-marine.
US5213162A (en) * 1991-02-14 1993-05-25 Societe Nationale Elf Aquitaine (Production) Submarine wellhead
US5732773A (en) * 1996-04-03 1998-03-31 Sonsub, Inc. Non-welded bore selector assembly
US8733436B2 (en) 2002-07-16 2014-05-27 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US9556710B2 (en) 2002-07-16 2017-01-31 Onesubsea Ip Uk Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8469086B2 (en) 2002-07-16 2013-06-25 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US10107069B2 (en) 2002-07-16 2018-10-23 Onesubsea Ip Uk Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8746332B2 (en) 2002-07-16 2014-06-10 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20100206546A1 (en) * 2003-05-31 2010-08-19 Cameron International Corporation Apparatus and Method for Recovering Fluids From a Well and/or Injecting Fluids Into a Well
US8220535B2 (en) 2003-05-31 2012-07-17 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8272435B2 (en) 2003-05-31 2012-09-25 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8281864B2 (en) 2003-05-31 2012-10-09 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20090294132A1 (en) * 2003-05-31 2009-12-03 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US20090301727A1 (en) * 2003-05-31 2009-12-10 Cameron International Corporation Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8540018B2 (en) 2003-05-31 2013-09-24 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8573306B2 (en) 2003-05-31 2013-11-05 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8622138B2 (en) 2003-05-31 2014-01-07 Cameron Systems (Ireland) Limited Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
US8776891B2 (en) 2004-02-26 2014-07-15 Cameron Systems (Ireland) Limited Connection system for subsea flow interface equipment
US9260944B2 (en) 2004-02-26 2016-02-16 Onesubsea Ip Uk Limited Connection system for subsea flow interface equipment
US8297360B2 (en) 2006-12-18 2012-10-30 Cameron International Corporation Apparatus and method for processing fluids from a well
US8776893B2 (en) 2006-12-18 2014-07-15 Cameron International Corporation Apparatus and method for processing fluids from a well
US9291021B2 (en) 2006-12-18 2016-03-22 Onesubsea Ip Uk Limited Apparatus and method for processing fluids from a well
US20100025034A1 (en) * 2006-12-18 2010-02-04 Cameron International Corporation Apparatus and method for processing fluids from a well
US20090126938A1 (en) * 2007-11-19 2009-05-21 Vetco Gray Inc. Utility skid tree support system for subsea wellhead
US8245787B2 (en) * 2007-11-19 2012-08-21 Vetco Gray Inc. Utility skid tree support system for subsea wellhead

Also Published As

Publication number Publication date
SU372835A3 (xx) 1973-03-01
OA02716A (fr) 1970-12-15
NO122474B (xx) 1971-07-05
FR1567019A (xx) 1969-05-16
NL6800773A (xx) 1968-07-22
GB1211138A (en) 1970-11-04

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